lib/smappy/tile.rb in smappy-0.0.2 vs lib/smappy/tile.rb in smappy-0.0.3

@@ -1,7 +1,7 @@
 require 'open-uri'
-require 'rmagick'
+require 'chunky_png'
 
 module Smappy
   class Tile
     SIZE = 256
     
@@ -31,11 +31,12 @@
       [center_tile_x - offset_x,
        center_tile_y - offset_y]
     end
     
     def to_image
-      data = open(to_url).read
-      Magick::Image.from_blob(data).first
+      @tile_image ||= ChunkyPNG::Image.from_datastream(
+        ChunkyPNG::Datastream.from_io(open(to_url))
+      )
     end
     
     def x
       @x.to_i
     end